elijahdecent5471 elijahdecent5471

01-04-2024
Mathematics

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A bag contains 20 balls. 8 balls are green 7 are white and 5 are red. What is the minimum number of balls that must be picked up from the bag blindfolded without replacing any of it to be assured of picking at least one ball of each colour?
a 17
b 16
c 13
d 11

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